zbargtk.h File Reference

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Classes
struct	_ZBarGtk
struct	_ZBarGtkClass

Macros
#define	ZBAR_GTK(obj)
#define	ZBAR_GTK_CLASS(klass)
#define	ZBAR_GTK_GET_CLASS(obj)
#define	ZBAR_IS_GTK(obj)
#define	ZBAR_IS_GTK_CLASS(klass)
#define	ZBAR_TYPE_GTK
	SECTION:ZBarGtk : barcode reader GTK+ 2.x widget. More...

Typedefs
typedef struct _ZBarGtk	ZBarGtk
typedef struct _ZBarGtkClass	ZBarGtkClass

Functions
GType	zbar_gtk_get_type (void) G_GNUC_CONST
const char *	zbar_gtk_get_video_device (ZBarGtk *zbar)
	retrieve the currently opened video device. More...
gboolean	zbar_gtk_get_video_enabled (ZBarGtk *zbar)
	retrieve the current video enabled state. More...
gboolean	zbar_gtk_get_video_opened (ZBarGtk *zbar)
	retrieve the current video opened state. More...
gboolean	zbar_gtk_image_from_pixbuf (zbar_image_t *image, GdkPixbuf *pixbuf)
	utility function to populate a zbar_image_t from a GdkPixbuf. More...
GtkWidget *	zbar_gtk_new (void)
	zbar_gtk_new: create a new barcode reader widget instance. More...
void	zbar_gtk_scan_image (ZBarGtk *zbar, GdkPixbuf *image)
	zbar_gtk_scan_image: More...
void	zbar_gtk_set_video_device (ZBarGtk *zbar, const char *video_device)
	open a new video device. More...
void	zbar_gtk_set_video_enabled (ZBarGtk *zbar, gboolean video_enabled)
	enable/disable video scanning. More...

Macro Definition Documentation

#define ZBAR_GTK

(

obj

)

Referenced by open_button_clicked(), status_button_toggled(), video_changed(), video_enabled(), video_opened(), zbar_gtk_dispose(), zbar_gtk_expose(), zbar_gtk_get_property(), zbar_gtk_processing_thread(), zbar_gtk_realize(), zbar_gtk_set_property(), zbar_gtk_size_allocate(), zbar_gtk_size_request(), and zbar_gtk_unrealize().

#define ZBAR_GTK_CLASS

(

klass

)

#define ZBAR_GTK_GET_CLASS

(

obj

)

#define ZBAR_IS_GTK

(

obj

)

#define ZBAR_IS_GTK_CLASS

(

klass

)

#define ZBAR_TYPE_GTK

SECTION:ZBarGtk : barcode reader GTK+ 2.x widget.

zbar/zbargtk.h

embeds a barcode reader directly into a GTK+ based GUI. the widget can process barcodes from a video source (using the ZBarGtk:video-device and ZBarGtk:video-enabled properties) or from individual GdkPixbufs supplied to zbar_gtk_scan_image()

Since: 1.5

Referenced by zbar_gtk_new().

Typedef Documentation

typedef struct _ZBarGtk ZBarGtk

typedef struct _ZBarGtkClass ZBarGtkClass

Function Documentation

GType zbar_gtk_get_type

(

void

)

References test_pygtk::info, zbar_gtk_class_init(), and zbar_gtk_init().

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const char* zbar_gtk_get_video_device

(

ZBarGtk *

zbar

)

retrieve the currently opened video device.

Returns: the current video device or NULL if no device is opened

References _ZBarGtkPrivate::video_device, and ZBAR_GTK_PRIVATE.

gboolean zbar_gtk_get_video_enabled

(

ZBarGtk *

zbar

)

retrieve the current video enabled state.

Returns: true if video scanning is currently enabled, false otherwise

References _ZBarGtkPrivate::video_enabled, and ZBAR_GTK_PRIVATE.

Referenced by status_button_toggled(), video_enabled(), and video_opened().

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gboolean zbar_gtk_get_video_opened

(

ZBarGtk *

zbar

)

retrieve the current video opened state.

Returns: true if video device is currently opened, false otherwise

References _ZBarGtkPrivate::video_opened, and ZBAR_GTK_PRIVATE.

Referenced by status_button_toggled(), video_enabled(), and video_opened().

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gboolean zbar_gtk_image_from_pixbuf	(	zbar_image_t *	image,
		GdkPixbuf *	pixbuf
	)

utility function to populate a zbar_image_t from a GdkPixbuf.

the zbar library image destination to populate : the GdkPixbuf source

Returns: TRUE if successful or FALSE if the conversion could not be performed for some reason

References fourcc, scan_image::height, scan_image::width, zbar_gtk_release_pixbuf(), zbar_image_set_data(), zbar_image_set_format(), zbar_image_set_size(), and zbar_image_set_userdata().

Referenced by zbar_gtk_processing_thread().

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GtkWidget* zbar_gtk_new

(

void

)

zbar_gtk_new: create a new barcode reader widget instance.

initially has no associated video device or image.

Returns: a new ZBarGtk widget instance

References ZBAR_TYPE_GTK.

Referenced by main().

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void zbar_gtk_scan_image	(	ZBarGtk *	zbar,
		GdkPixbuf *	image
	)

zbar_gtk_scan_image:

References _ZBarGtkPrivate::queue, zbar_gtk_new_value(), and ZBAR_GTK_PRIVATE.

Referenced by open_button_clicked().

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void zbar_gtk_set_video_device	(	ZBarGtk *	zbar,
		const char *	video_device
	)

open a new video device.

: the platform specific name of the device to open. use NULL to close a currently opened device.

Note

since opening a device may take some time, this call will return immediately and the device will be opened asynchronously

References _ZBarGtkPrivate::queue, _ZBarGtkPrivate::video_device, _ZBarGtkPrivate::video_enabled, zbar_gtk_new_value(), and ZBAR_GTK_PRIVATE.

Referenced by video_changed(), and zbar_gtk_set_property().

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void zbar_gtk_set_video_enabled	(	ZBarGtk *	zbar,
		gboolean	video_enabled
	)

enable/disable video scanning.

: true to enable video scanning, false to disable

has no effect unless a video device is opened

References _ZBarGtkPrivate::queue, _ZBarGtkPrivate::video_enabled, video_enabled(), zbar_gtk_new_value(), and ZBAR_GTK_PRIVATE.

Referenced by status_button_toggled(), and zbar_gtk_set_property().

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